body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: #222;
  color: #fff;
}
header .logo {
  font-size: 1.5rem;
}
nav .menu {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
}
nav .menu-toggle {
  font-size: 1.5rem;
  background: none;
  border: none;
  color: #fff;
}
.hero {
  padding: 2rem;
  background: linear-gradient(to right, #6a11cb, #2575fc);
  color: #fff;
  text-align: center;
}
.books {
  padding: 2rem;
}
.book-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
footer {
  padding: 1rem;
  text-align: center;
  background: #222;
  color: #fff;
}